Sodium Hydroxide (50%)

17-4 PH (Stainless)A - Excellent
3% NI / IronB - Good
ABS PlasticA¹ - Excellent
Acetal (Delrin ®)A - Excellent
Alloy 20A - Excellent
AluminumD - Poor
Aluminum BronzeD - Poor
BrassD - Poor
BronzeB - Good
Buna N (Nitrile)D - Poor
Carbon GraphiteA¹ - Excellent
Carbon SteelB - Good
Carpenter 20B - Good
Cast IronD - Poor
Ceramic AI203A - Excellent
Ceramic MagnetN/A
ChemRaz® (FFKM)C - Fair
CopperB - Good
CPVCB - Good
Ductile IronB - Good
EpoxyA - Excellent
Ethylene Propylene (EPDM)A³ - Excellent
Flourocarbon (FKM) Viton®D - Poor
GraphiteA - Excellent
Gray IronB - Good
Hastelloy CC - Fair
Hytrel® (TPE)C - Fair
Kalrez® (Perfluoroelastomer)A - Excellent
Kel-F® (PCTFE)B - Good
Kynar® (PVDF)D - Poor
LDPEA - Excellent
MonelA - Excellent
Natural RubberA¹ - Excellent
NeopreneA³ - Excellent
NI Plated DuctileB - Good
NORYL® (PPO)A - Excellent
NylonA¹ - Excellent
Polycarbonate (PC)N/A
Polyetherether Ketone (PEEK)A³ - Excellent
Polypropylene (PP)A³ - Excellent
Polysulfone (PSU)B - Good
Polyurethane (PUR)N/A
PPS (Ryton®)A - Excellent
PTFE (Teflon®)A - Excellent
PVCA³ - Excellent
SiliconeA¹ - Excellent
Silicone BronzeD - Poor
Stainless Steel - 304B - Good
Stainless Steel - 316A - Excellent
Stainless Steel - 400A - Excellent
Stellite®N/A
TitaniumA - Excellent
Tygon®B - Good